Numerical simulation of modulation to incident laser by submicron to micron surface contaminants on fused silica

Yang Liang^{1, 2}, Xiang Xia^{1, †,}, Miao Xin-Xiang^{2, ‡,}, Li Li¹, Yuan Xiao-Dong², Yan Zhong-Hua¹, Zhou Guo-Rui², Lv Hai-Bing², Zheng Wan-Guo², Zu Xiao-Tao¹

Schematic illustration of the particulate contaminant: (a) on the input surface, (b) on the output surface of fused silica,a,b, andcare semi-axes of ellipsoid alongx,y, andzdirections, andhis the depth of particle embedded in the surface.